Recently taken on a new contract, I'm a freelancer. It's a small one, only a few hours a week.
I sent my latest invoice to the client/boss and he replied "Invoice received, I'll pay it ASAP, I'm waiting on a few other payments to come in."
This has shaken my trust in the client, it's unprofessional, why not just say 'Thanks I'll get that paid ASAP."
In case it's relevant, the amount is less than £300.
If he doesn't have an easily accessible pot for payments for such low amounts, it makes me feel uneasy.